March 14, 2026
How to fix "Failed to find Server Action" in Next.js
If you are seeing errors like:
Error: Failed to find Server Action "..." This request might be from an older or newer deployment. There are usually two different problems mixed together:
a real deployment skew problem; malformed requests hitting your app with garbage next-action headers. The official Next.js error page focuses on the first case. The GitHub discussion #87851 shows that many teams were also hit by the second one, especially bot traffic sending values like next-action: x.
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